.\" -*- nroff -*-
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.\" Copyright (c) 2016 John H. Baldwin <jhb@FreeBSD.org>
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.Dd April 27, 2016
.Dt BUS_RESCAN 9
.Os
.Sh NAME
.Nm BUS_RESCAN
.Nd "rescan a bus checking for devices that have been added or removed"
.Sh SYNOPSIS
.In sys/param.h
.In sys/bus.h
.Ft void
.Fn BUS_RESCAN "device_t dev"
.Sh DESCRIPTION
The
.Fn BUS_RESCAN
method is called to request a rescan of the child devices on a bus device.
The method should add any devices that have been added since the previous
scan and remove devices that have been removed.
This method is not required to re-examine existing devices to determine if
their properties have changed.
This method is also not required to propagate the rescan request to child
devices.
.Sh SEE ALSO
.Xr device 9
